currently on cycle day 30, period was due on cyxle day 28 like clock work for the past 7 months or so. give a day sometimes. so 27th, but that would be like red spotting.

Yesterday cycle day 29 I had brown dark spotting, like old blood, around 2pm and nothing since( I'd be about 14 -15 dpo assuming I ovulated at that time according to app.) Around 1 am I had what seemed to be about to get a.f cramping, woke up to dry, nothing no spotting ,nothing. but during the cramps there was alot of fluttering and twitching sensation between my rib cage and my lower abdominal area. I have had 2 bfn in the past wk. I guess my question is if it was IB then when would I have a bfp? would I get a positive through blood before a hpt. because they are bfn and its annoying because i feel like i could be. or at least i felt like i wasnt going to get a.f this month